... 3.finish:black painted,mill,galvanized hot dipped galvanized steel grating 1.Material: SS302,SS304,SS316,SS310,SS314,SS201,SS430, ... . 5.Surface treatment: G - galvanized,P - painted,U - untreated6.Grating standard:1)China: YB/T4001.1-2007(YB/T4001.1 ... load-bearing capacity, non-slip and safe, easy installation, material-economic, sturdy and durable, ventilated, easy to clean and attractive appearance ...